Installations for controlling water pollution; exhaust fans (ventilation or air-conditioning); ionisers for air treatment; ozone disinfectants for air and water; installations for recovering heat from the air; apparatus for recovering heat from the air; air-purifying filters (parts of air-cleaning machines or installations); air-filtering installations; air-ionising devices; air-circulation apparatus; air-purifying devices; ionising instruments for air treatment; air-purifying installations; air purifiers for use with water supply installations; electrostatic precipitators for air-purification; air-conditioning installations for industrial purposes; air-conditioning apparatus using latent heat in the air; air purifiers; air sterilisers; air filters for blocking the dust in industrial processes; air supply diffusers; air filters for use as dust exhausters for industrial processes; air-filtering apparatus; air-purifying machines; air-purifying apparatus; air-purifying separators; air-sterilising apparatus; air-purifying apparatus; air-purifying apparatus and machines; air filters; air-purifying filters; fans (parts of air-conditioning installations); air purifiers for industrial purposes

consultancy in the field of chemical pollution cleaning; control of water pollution; consultancy in the field of oil pollution treatment; rental of air-purifying apparatus, air regenerators, air treatment, air purification; chemical treatment of exhaust gases from the combustion of fossil fuels; treatment of toxic materials; consultancy in the field of chemical pollution treatment; providing of information relating to treatment of materials; treatment of materials; water treatment and purification; air treatment